1.
Navigate to MANAGEMENT > NTP Setup.
2.
In the NTP Services panel, click the GEAR icon in the top right corner. The Edit
NTP Services window will open:
3.
Click the Orphan Mode tab, and select an NTP Stratum other than 15. This will be
the Stratum level SecureSync will transition to in the event its input references
become invalid.
4.
Click Submit. SecureSync will automatically stop and re-start the NTP Service.
Note: Per NTP protocol definition, for an NTP Orphan Mode Timing Net-
work to operate properly, ALL servers and clients must be set to the same
Stratum level (e.g., "5").
2.15.14 Host Disciplining
Host Disciplining allows an NTP input reference to discipline SecureSync's oscillator. This
may be utilized e.g., with SecureSync units that do not have a GPS receiver because they
are operated as Stratum2 servers.
In general, units that do not have a GNSS reference will look to the time references as they
are ordered in the Reference Priority to obtain their time references. If NTP is enabled and
valid, it will discipline the unit's system time when it is the highest valid reference.
2.15.15 NTP Expert Mode
Advanced NTP configuration is possible via the NTP Expert Mode, which allows you to
write directly into the NTP.conf file (the syntax is similar to the one used with CISCO
routers).
126
CHAPTER 2 • SecureSync 2400 User Manual Rev. 2
2.15 Configure NTP
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